19964000

素因数分解:

$2^5\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 192

約数和(自身を含む): 60383232

約数和(自身を除く): 40419232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 25, 28, 31, 32, 35, 40, 46, 50, 56, 62, 70, 80, 92, 100, 112, 115, 124, 125, 140, 155, 160, 161, 175, 184, 200, 217, 224, 230, 248, 250, 280, 310, 322, 350, 368, 400, 434, 460, 496, 500, 560, 575, 620, 644, 700, 713, 736, 775, 800, 805, 868, 875, 920, 992, 1000, 1085, 1120, 1150, 1240, 1288, 1400, 1426, 1550, 1610, 1736, 1750, 1840, 2000, 2170, 2300, 2480, 2576, 2800, 2852, 2875, 3100, 3220, 3472, 3500, 3565, 3680, 3875, 4000, 4025, 4340, 4600, 4960, 4991, 5152, 5425, 5600, 5704, 5750, 6200, 6440, 6944, 7000, 7130, 7750, 8050, 8680, 9200, 9982, 10850, 11408, 11500, 12400, 12880, 14000, 14260, 15500, 16100, 17360, 17825, 18400, 19964, 20125, 21700, 22816, 23000, 24800, 24955, 25760, 27125, 28000, 28520, 31000, 32200, 34720, 35650, 39928, 40250, 43400, 46000, 49910, 54250, 57040, 62000, 64400, 71300, 79856, 80500, 86800, 89125, 92000, 99820, 108500, 114080, 124000, 124775, 128800, 142600, 159712, 161000, 173600, 178250, 199640, 217000, 249550, 285200, 322000, 356500, 399280, 434000, 499100, 570400, 623875, 644000, 713000, 798560, 868000, 998200, 1247750, 1426000, 1996400, 2495500, 2852000, 3992800, 4991000, 9982000, 19964000]

約数ペア:

[(1, 19964000), (2, 9982000), (4, 4991000), (5, 3992800), (7, 2852000), (8, 2495500), (10, 1996400), (14, 1426000), (16, 1247750), (20, 998200), (23, 868000), (25, 798560), (28, 713000), (31, 644000), (32, 623875), (35, 570400), (40, 499100), (46, 434000), (50, 399280), (56, 356500), (62, 322000), (70, 285200), (80, 249550), (92, 217000), (100, 199640), (112, 178250), (115, 173600), (124, 161000), (125, 159712), (140, 142600), (155, 128800), (160, 124775), (161, 124000), (175, 114080), (184, 108500), (200, 99820), (217, 92000), (224, 89125), (230, 86800), (248, 80500), (250, 79856), (280, 71300), (310, 64400), (322, 62000), (350, 57040), (368, 54250), (400, 49910), (434, 46000), (460, 43400), (496, 40250), (500, 39928), (560, 35650), (575, 34720), (620, 32200), (644, 31000), (700, 28520), (713, 28000), (736, 27125), (775, 25760), (800, 24955), (805, 24800), (868, 23000), (875, 22816), (920, 21700), (992, 20125), (1000, 19964), (1085, 18400), (1120, 17825), (1150, 17360), (1240, 16100), (1288, 15500), (1400, 14260), (1426, 14000), (1550, 12880), (1610, 12400), (1736, 11500), (1750, 11408), (1840, 10850), (2000, 9982), (2170, 9200), (2300, 8680), (2480, 8050), (2576, 7750), (2800, 7130), (2852, 7000), (2875, 6944), (3100, 6440), (3220, 6200), (3472, 5750), (3500, 5704), (3565, 5600), (3680, 5425), (3875, 5152), (4000, 4991), (4025, 4960), (4340, 4600)]